| Value |
Category |
| 00 |
NIU (not in universe) |
| 01 |
No grade |
| 11 |
1 year of primary |
| 12 |
2 year of primary |
| 13 |
3 year of primary |
| 14 |
4 year of primary |
| 15 |
5 year of primary |
| 16 |
6 year of primary |
| 21 |
1 year of secondary |
| 22 |
2 year of secondary |
| 23 |
3 year of secondary |
| 24 |
4 year of secondary |
| 25 |
5 year of secondary |
| 31 |
1 year of university |
| 32 |
2 year of university |
| 33 |
3 year of university |
| 34 |
4 year of university |
| 35 |
5 year of university |
| 36 |
6 year of university |
| 38 |
8 year of univesity |
| 40 |
University graduate year unknown |
| 42 |
2 years, university graduate |
| 43 |
3 years, university graduate |
| 44 |
4 years, university graduate |
| 45 |
5 years, university graduate |
| 46 |
6 years, university graduate |
| 47 |
7 years, university graduate |
| 48 |
8 years, university graduate |
| 49 |
9 years, university graduate |
| 99 |
Unknown |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.